KR20170028504A - Wireless Power Transfer Apparatus with Omni-Directional Feature - Google Patents

Abstract

An embodiment of the present invention relates to a wide area omnidirectional wireless power transfer apparatus which can be modularized. The apparatus comprises a plurality of windings, and generates a rotating magnetic field in a space to transfer power by applying current having a phase difference of 90 degrees to the plurality of windings, thereby constructing an omnidirectional wireless charging environment.

Description

Technical Field [0001] The present invention relates to a wireless power transfer apparatus,

The present embodiment relates to a modularized wide area omnidirectional wireless power transmission apparatus. More particularly, to a wide area omnidirectional wireless power transmission apparatus capable of generating modulated power in all directions using a DQ magnetic field generation scheme.

The following description only provides background information related to the present embodiment and does not constitute the prior art.

In recent years, demand for smart electronic devices such as mobile devices, object internet, and wearable devices has rapidly increased, and these smart electronic devices have become essential elements for providing a ubiquitous environment to users. Meanwhile, In this case, there is a problem that a separate charger for charging the smart electronic device must be provided at all times. To solve these problems, a wireless charging area capable of wireless charging in a wide space such as a Wi-Fi zone will be provided in the future so that all smart electronic devices in the wireless charging area can receive wireless power anytime and anywhere A new form of ubiquitous wireless power technology is expected to emerge

These ubiquitous wireless power technologies are classified as follows: 1) the uniformity of the magnetic field of the user's body in the wireless charging area (the ICNIRP guideline of 27.1T or less); 2) long- ) The receiver is characterized in that it can satisfy 6-DOF that can be charged irrespective of three spatial directions (x, y, z axes) and three angles (Roll, Pitch, Yaw). Therefore, in order to create an optimal ubiquitous wireless power environment capable of satisfying the above three characteristics, it is possible to uniformly distribute the magnetic field generated from the transmitting apparatus to a wide range, Requires a modular wide area omnidirectional wireless power delivery device that meets the characteristics of receiving power

The present embodiment is characterized in that the wireless power transmission apparatus includes a plurality of windings, and a current is applied to a plurality of windings to have a phase difference of 90 degrees with respect to each other, The present invention aims to provide a wireless charging environment for a mobile terminal.

The present embodiment is directed to a non-directional wireless charging environment by receiving a magnetic field generated by a rotating system on a biaxial space generated from a transmitting apparatus by using a plurality of windings including a plurality of windings .

According to another aspect of the present invention, there is provided a wireless power transmission apparatus in which a plurality of omnidirectional coils are modularized, thereby creating a non-directional wireless charging environment over a wide range.

This embodiment includes: a core having a predetermined width and length; And a winding portion including a first winding wound around the core in a longitudinal direction of the core and a second winding wound around the core in a width direction of the core.

According to another aspect of the present invention, there is provided a wireless power transmission apparatus comprising: a core including a plurality of coils each in a lateral direction and a longitudinal direction, the plurality of coils each having a predetermined width and a predetermined length; And a winding portion including a first winding wound around the core in a longitudinal direction of the core and a second winding wound around the core in a width direction of the core.

According to another aspect of the present invention, there is provided a semiconductor device comprising: at least one first core unit and at least one second core unit, wherein the at least one second core unit is arranged in a state of vertically crossing the first core unit, A core part forming a shape; And a winding portion including a first winding wound around the first core unit and a second winding wound around the second core unit.

According to another aspect of the present invention, there is provided a winder unit comprising at least two winder units, each of which is longitudinally and transversely arranged, wherein a first winding unit and a third winding unit facing each other in the mutually diagonally opposite direction, And a winding module that receives a current having a predetermined phase difference from the second and fourth winding units facing each other to form a rotating magnetic field.

According to another aspect of the present invention, there is provided a wireless power transmission apparatus including a plurality of winding modules, each of which is longitudinally and transversely arranged, each of the plurality of winding modules includes at least two winding units Wherein the first winding unit and the third winding unit facing each other in the mutually diagonally opposite direction of the winding unit have a predetermined phase difference from each other in the mutually diagonally opposite second winding unit and the fourth winding unit of the winding unit And a rotating magnetic field is formed by receiving a current having a predetermined voltage.

The present embodiment is characterized in that the wireless power transmission apparatus includes a plurality of windings, and a current is applied to a plurality of windings to have a phase difference of 90 degrees with respect to each other, The present invention is advantageous in that a wireless charging environment of the wireless communication system can be created.

According to another aspect of the present invention, a wireless power transfer apparatus includes a plurality of windings, and receives a magnetic field by a rotating system in a biaxial space generated from a transmitting apparatus by using a plurality of windings, Can be produced.

According to another aspect of the present invention, the wireless power transmission apparatus is realized in a modular form of a plurality of omnidirectional coils, thereby providing a non-directional wireless charging environment over a wide range.

1 to 4 are schematic views of a wireless power transmission apparatus according to an embodiment of the present invention.
5 is a diagram illustrating a modular model of a wireless power transfer apparatus according to an embodiment of the present invention.
6 to 10 are schematic views of a wireless power transmission apparatus according to another embodiment of the present invention.
11A-11C and 12A-12B are schematic diagrams of a wireless power transfer device in accordance with another embodiment of the present invention.
13 is a diagram illustrating a modular model of a wireless power transmission apparatus according to another embodiment of the present invention
14 is an exemplary view illustrating an embodiment of a D-type winding module of a wireless power transfer apparatus according to another embodiment of the present invention.

Hereinafter, the present embodiment will be described in detail with reference to the accompanying drawings.

1 to 4 are schematic views of a wireless power transmission apparatus according to an embodiment of the present invention. A wireless power transfer device according to an embodiment of the present invention may be used as a wireless power transmission device or as a wireless power reception device, respectively, according to an embodiment. 1 to 4 illustrate an embodiment of a wireless power transmission apparatus that can be implemented in various forms according to the additional installation of the metal plate 200, the auxiliary windings 300a and 300b, and the auxiliary core 400. FIG.

1 is a diagram illustrating a first embodiment of a wireless power delivery apparatus 100 according to an embodiment of the present invention. On the other hand, the first embodiment is the most basic implementation of the wireless power delivery device 100. [

Referring to FIG. 1, a wireless power transmission apparatus 100 according to an embodiment of the present invention includes a core 110 and a winding unit 120.

The core 110 is embodied in a shape having a predetermined width and length as a magnetic material used for increasing magnetic flux transmission. The core 110 reduces the magnetic resistance generated in the internal space of the winding wound around the core 110, thereby causing an effect of increasing the magnetic flux density produced by the current flowing through the winding.

The core 110 according to the present embodiment can be manufactured using any material including a ferrite material, and its shape can be implemented in any shape including a quadrangle. Hereinafter, a case where the core 110 according to the present embodiment is implemented in the form of a quadrangle will be exemplified.

The winding unit 120 includes a first winding 122 wound around the core 110 in the longitudinal direction of the core 110 and a second winding 124 wound around the core 110 in the width direction of the core 110 . The first winding 122 and the second winding 124 may be implemented with a Litz Wire to minimize the power loss occurring within the winding.

The first winding 122 and the second winding 124 are wound on the core 110 in a manner perpendicular to each other.

The first winding 122 and the second winding 124 are respectively supplied with alternating current having a predetermined phase difference when the wireless power transmitting apparatus 100 is used as a wireless power transmitting apparatus. At this time, the alternating current applied to the first winding 122 and the alternating current applied to the second winding 124 preferably have a phase difference of 90 degrees, but are not limited thereto. For example, if an alternating current as shown in Equation 1 is supplied to the first winding 122, an alternating current as shown in Equation 2 is supplied to the second winding 124.

As will be understood from the above-described equations (1) and (2), alternating currents (hereinafter, referred to as D current and Q current respectively) applied to the first winding 122 and the second winding 124 will be exemplified. ) Have the same size but have a phase difference of 90 degrees with respect to each other. Since the AC current having the phase difference of 90 degrees is applied to the first winding 122 and the second winding 124 in this way, the first winding 122 and the second winding 124 are wound around the wound core 110, The magnetic field generated by the magnetic field generator also has a phase difference of 90 degrees. The magnetic field generated in the core 110 in which the first winding 122 and the second winding 124 are wound has a phase difference of 90 degrees and the first winding 122 and the second winding 124 (A combined magnetic field of a magnetic field due to the D current and a Q current) radiated by the wireless power transmission apparatus 100 is arranged to have a constant rotating magnetic field with a constant magnitude . When the wireless power transmitting apparatus 100 according to the embodiment of the present invention is used as a wireless power transmitting apparatus due to the rotating magnetic field, the receiving unit having a biaxial planar structure in the wireless power transmitting region can receive power 6-DOF wireless power characteristics can be realized.

Meanwhile, when the wireless power transmission apparatus 100 according to an exemplary embodiment of the present invention is used as a wireless power receiving apparatus, the first winding 122 and the second winding 124 are induced in the magnetic field generated from the wireless power transmission apparatus, Thereby generating an induced electromotive force.

2 is a diagram illustrating a second embodiment of a wireless power delivery apparatus 100 according to an embodiment of the present invention.

The wireless power transmission apparatus 100 according to an embodiment of the present invention may be implemented in a form of additionally providing the metal plate 200 as a component in the first embodiment of the wireless power transmission apparatus 100 shown in FIG. .

The metal plate 200 is disposed on one side of the core 110 in parallel with the longitudinal direction of the core 110 and spaced apart from the core 110 by a predetermined distance.

The metal plate 200 is made of a material having high conductivity such as an aluminum plate and shields a magnetic field incident on the metal plate 200. The magnetic field shielded by the metal plate 200 means a magnetic field radiated from the wireless power transmission apparatus 100 when the wireless power transmission apparatus 100 is used as a wireless power transmission apparatus, Refers to a magnetic field incident from a wireless power transmission apparatus when the wireless power transmission apparatus is used as a wireless power reception apparatus. On the other hand, an eddy current is generated on the surface of the metal plate 200 absorbing the magnetic field, and a magnetic field is generated in the metal plate 200 in a direction opposite to the direction of the magnetic field incident on the metal plate 200. The metal plate 200 cancels and shields the magnetic field incident on the metal plate 200 by the magnetic field in the opposite direction.

When the metal plate 200 is used in the wireless power transmission device 100, the wireless power transmission device 100 is installed in a direction opposite to the direction in which the magnetic field 200 is intended to radiate the magnetic field. Since the metal plate 200 shields the magnetic field incident on the metal plate 200 as described above, the radio-power transmission device 100 in which the metal plate 200 is disposed on one side is disposed only on the opposite side where the metal plate 200 is located It emits a magnetic field. The wireless power transmission apparatus 100 according to an embodiment of the present invention includes a metal plate 200 installed on one side of the core 110, for example, in a direction not using a magnetic field, and reflects the magnetic field to the opposite side where the metal plate 200 is located. This can block magnetic fields that leak in undesired directions. Also, since the magnetic field radiated by the metal plate 200 mainly flows into the core 110 and the magnetic field inside the core 110 is canceled, the loss of the core 110 can be reduced to increase the power transmission efficiency.

3 is a diagram illustrating a third embodiment of a wireless power delivery apparatus 100 according to an embodiment of the present invention.

The wireless power transfer apparatus 100 according to an embodiment of the present invention further includes at least one auxiliary winding 300a, 300b as a component in the first embodiment of the wireless power transfer apparatus 100 shown in Fig. 1, And the like.

The auxiliary windings 300a and 300b are positioned at a predetermined distance from the core 110 on one side of the core 110. [ The auxiliary coils 300a and 300b perform the same function as the metal plate 200 shown in FIG. 2. However, when the metal plate 200 is used, the auxiliary coils 300a and 300b can reduce power consumption. The auxiliary windings 300a and 300b do not require a separate drive circuit and a closed loop type Litz winding can be used to reduce the power consumption.

The auxiliary coils 300a and 300b are electrically connected to the two terminals of both ends of the auxiliary coils 300a and 300b and are connected in series to the auxiliary coils 300a and 300b to increase the magnitude of the magnetic field generated from the auxiliary coils 300a and 300b (Variable) capacitors may be additionally provided. The auxiliary windings 300a and 300b may be formed by extending the windings wound on the core 110 according to the embodiment.

3, a plurality of auxiliary windings are provided, and each of the auxiliary windings 300a and 300b is positioned at both ends of the lower side of the core 110. However, the present invention is not limited thereto. For example, the auxiliary windings 300a and 300b may be installed in a direction opposite to the direction in which the wireless power transmission apparatus 100 desires to radiate the magnetic field to block the magnetic field leaking to an undesired direction (rear portion of the auxiliary winding) Can be implemented in any form as long as it can reduce the loss of the core.

4 is a diagram illustrating a fourth embodiment of a wireless power delivery apparatus 100 according to an embodiment of the present invention.

A wireless power delivery apparatus 100 according to an embodiment of the present invention includes at least one auxiliary winding 300a and 300b and a supplementary core 400 in a first embodiment of the wireless power transfer apparatus 100 shown in FIG. As a constituent element.

The auxiliary coils 300a and 300b are located at a predetermined distance from the core 110 on one side of the core 110 as described above with reference to FIG. 3 and perform the same function as the metal plate 200 shown in FIG.

The auxiliary core 400 is disposed on one side of the auxiliary windings 300a and 300b in parallel with the longitudinal direction of the core 110 and spaced apart from the auxiliary windings 300a and 300b. The auxiliary core 400 serves to increase the strength of the magnetic field generated from the auxiliary windings 300a and 300b so that the magnetic field can be more strongly applied to the power transfer area. In addition, such an auxiliary core 400 can more effectively cancel the internal magnetic flux of the core 110, thereby reducing the loss of the core 110. In addition, the auxiliary core 400 has the effect of shielding the magnetic field leaking to the back of the auxiliary core 400. [ 4, a wireless power transmission apparatus 100 according to an embodiment of the present invention includes at least one auxiliary winding 300a, 300b and a second auxiliary winding 300a in a first embodiment of the wireless power transmission apparatus 100 shown in FIG. It is to be understood that the present invention may be embodied in the form of an auxiliary core 400 as a component.

5 is a diagram illustrating a modular model of a wireless power transfer apparatus according to an embodiment of the present invention. On the other hand, the modularization model of the wireless power transmission apparatus is implemented in such a manner that the wireless power transmission apparatus according to an embodiment of the present invention is regularly arranged as one unit module for radiating a magnetic field in a wide space. 5, a modular model in the case where the wireless power transmission apparatus according to an exemplary embodiment of the present invention is implemented as a wireless power transmission apparatus will be described by way of example, but the wireless power transmission apparatus is not limited thereto. The same or similar modularization model can be applied.

5, a modular model of a wireless power transfer apparatus according to an embodiment of the present invention (hereinafter, referred to as a modular wireless power transfer apparatus) includes a plurality of coils 510, 520, an inverter 530, and an auxiliary circuit 540. On the other hand, the inverter 530 is provided only when the modular wireless power transmission apparatus 500 is used as a wireless power transmission apparatus.

Each of the coils 510 and 520 constituting the modular wireless power transmission apparatus 500 is regularly arranged in the horizontal and vertical directions. In this case, the horizontal and vertical directions are orthogonal to each other to form a two-dimensional shape.

Each of the coils 510 and 520 basically has a first embodiment of the wireless power transmission apparatus 100 shown in Fig. 1 as a basic form. On the other hand, in FIG. 5, only a part of the coils is shown as a winding for the sake of convenience.

The first winding of one of the plurality of coils is connected to the first winding of each coil located at either side of the coil with respect to the transverse direction.

The second windings provided on any one of the plurality of coils are respectively connected to the second windings provided on the respective coils located at both sides of the one coil with respect to the longitudinal direction.

In another embodiment, each of the coils 510, 520 is based on a first implementation of the wireless power delivery device 100 shown in FIG. 1, but for a more efficient connection between the coils 510, It can be implemented in two types. Hereinafter, FIG. 5 illustrates a case where each of the coils 510 and 520 constituting the modular wireless power transmission apparatus 500 is implemented as two types.

The coils 510 and 520 constituting the modular wireless power transmission apparatus 500 are divided into a first type coil 510 and a second type coil 520 according to the winding type and the winding type.

The first type coil 510 includes a first winding 514 and a second winding 516 wound around the core 512 and the core 512. The first winding 514 and the second winding 516, Are each implemented in two separate windings.

The first winding 514 is divided into two windings 514a and 514b and each of the windings 514a and 514b is wound in the longitudinal direction of the core 512. [ At this time, the windings 514a and 514b are wound in the same direction, and the first winding 514a positioned on the upper side with respect to the center of the core 512 is wound up to the center portion starting from the upper end of the core 512 The first winding 514b provided at the lower side with respect to the center of the core 512 is wound from the center of the core 512 to the lower end.

The secondary winding 516 is divided into two windings 516a and 516b and each of the windings 516a and 516b is wound in the width direction of the core 512. [ At this time, the respective windings 516a and 516b are wound in the same direction, and the second winding 516a provided on the left side with respect to the center of the core 512 is wound to the center portion starting from the left side of the core 512 And the second winding 516b provided on the right side with respect to the center of the core 512 is wound to the right side starting from the center of the core 512. [

The second type coil 520 includes a first winding 524 and a second winding 526 wound around the core 522 and the core 522. The first winding 524 and the second winding 526, Are each implemented in two separate windings.

The first winding 524 is divided into two windings 524a and 524b and the respective windings 524a and 524b are wound in the longitudinal direction of the core 522. [ At this time, the windings 524a and 524b are wound in the same direction, and the first winding 524a provided on the upper side with respect to the center of the core 522 is wound up to the upper end starting from the center of the core 522 The first winding 524b provided at the lower side with respect to the center of the core 522 is wound up to the center portion starting from the lower end of the core 522. [

The second winding 526 is divided into two windings 526a and 526b and each of the windings 526a and 526b is wound in the width direction of the core 522. [ At this time, the respective windings 526a and 526b are wound in the same direction, and the second winding 526a provided on the left side with respect to the center of the core 522 is wound to the left starting from the center of the core 522 And the second winding 526b provided on the right side with respect to the center of the core 522 is wound to the center portion starting from the right side of the core 522. [

Similarly, each of the first windings provided on any one of the plurality of coils 510 and 520 may include a plurality of first coils disposed on both sides of one of the coils, Respectively. Each of the second windings provided on one of the plurality of coils is connected to each of the second windings provided on each of the coils located at both sides of the one coil with respect to the longitudinal direction.

As described above, the modular wireless power transfer apparatus 500 according to an exemplary embodiment of the present invention can configure the modular wireless power transfer apparatus 500 using different types of coils 510 and 520. FIG. As shown in FIG. 5, it can be confirmed that the modular wireless power transmission apparatus using different types of coils is more efficient in connection between the coils than the modular wireless power transmission apparatus using the same type of coils.

The inverter 530 is provided when the modular wireless power transmission apparatus 500 is used as a wireless power transmission apparatus and is connected to the first winding (not shown) of the plurality of coils 510 and 520 constituting the modular wireless power transmission apparatus 500, And the second winding with a different phase difference from each other. In FIG. 5, the modulated wireless power transmission apparatus 500 according to an exemplary embodiment of the present invention is illustrated as including one inverter 530, but the present invention is not limited thereto. For example, the modular wireless power transfer apparatus 500 according to an exemplary embodiment of the present invention may include one or more (e.g., one or more) coils 510 and 520, An inverter may be provided.

The auxiliary circuit 540 is a circuit for assisting the connection between the plurality of coils 510 and 520, and may be implemented as a short circuit or a compensation circuit. On the other hand, the compensation circuit is a circuit to be inserted for the purpose of reducing the burden on the large reactive power generated by the coil, and can be typically implemented by a capacitor. Such an auxiliary circuit 540 may be provided when the modular wireless power transmission apparatus 500 is used as a wireless power transmission apparatus or a wireless power reception apparatus.

Meanwhile, the modular wireless power transmission apparatus 500 according to an embodiment of the present invention selectively connects the plurality of coils 510 and 520 by interrupting the electrical connection between the inverter 530 and the plurality of coils 510 and 520 And a switch 550 for operating the switch. In addition, the modular wireless power transfer apparatus 500 according to an embodiment of the present invention may be implemented in a form further including a controller 560 that controls the operation of the inverter 530 and the switch 550. The control unit 560 includes an interface unit for receiving the user's command and controls the operation of the inverter 530 and the switch 550 according to a user command received from the interface unit.

6 to 10 are schematic views of a wireless power transmission apparatus according to another embodiment of the present invention. Similarly, a wireless power transfer device according to another embodiment of the present invention may be used as a wireless power transmission device or as a wireless power reception device, respectively, according to an embodiment.

6 is a diagram illustrating a first embodiment of a wireless power transfer apparatus 600 according to another embodiment of the present invention.

Referring to FIG. 6, a wireless power transmission apparatus 600 according to another embodiment of the present invention includes a core unit 610 and a winding unit 620.

The core portion 610 includes at least one first core unit 612 and at least one second core unit 614. On the other hand, in the first embodiment of the wireless power transmission apparatus 600, one first core unit 612 and one second core unit 614 are provided.

The first core unit 612 and the second core unit 614 can be manufactured using any material including a ferrite material. The shape of the first core unit 612 and the second core unit 614 can be any shape including a quadrangle. At this time, the second core unit 614 is arranged in a crossing manner in the center of the first core unit 612, preferably the center of the first core unit 612, to form a cross shape.

The first core unit 612 and the second core unit 614 may be implemented as separate core units and may be connected to each other and may be continuously connected without interruption to one core unit have.

The winding portion 620 includes a first winding 622 wound around the first core unit 612 and a second winding 624 wound around the second core unit 614. [ For example, the first winding 622 and the second winding 624 are wound on both ends of the first core unit 612 and both ends of the second core unit 614, respectively.

The first winding 622 and the second winding 624 receive alternating currents having a predetermined phase difference from each other when the wireless power transmitting apparatus 600 is used as a wireless power transmitting apparatus to form a rotating magnetic field. At this time, the alternating current applied to the first winding 622 and the alternating current applied to the second winding 624 preferably have a phase difference of 90 degrees, but the present invention is not limited thereto.

In the case of the first winding 622 and the second winding 624 of the wireless power transfer apparatus 600 according to another embodiment of the present invention, the first and second windings of the wireless power transmission apparatus 100 shown in FIG. Unlike the two windings, the windings are wound in a non-overlapping manner, so that the thickness of the windings can be made thinner (about two times). This advantage is particularly advantageous when the wireless power transmitting apparatus 600 is embodied as a wireless power receiving apparatus and embedded in a mobile device or the like.

FIG. 7 is a diagram illustrating a second embodiment of a wireless power transfer device 600 according to another embodiment of the present invention. On the other hand, a second embodiment of the wireless power transfer apparatus 600 is a case where the wireless power transfer apparatus is implemented as a modular model. Such a wireless power transmission apparatus may be implemented in a form including an inverter (not shown) when used as a wireless power transmission apparatus.

7, a second embodiment of a wireless power transfer apparatus 600 according to another embodiment of the present invention (hereinafter referred to explicitly as a modular wireless power transfer apparatus) includes a first core unit 612 And a plurality of second core units 614 (614a, 614b, 614c) that are perpendicular to the first core unit 612 are provided. 7, the first core unit 612 may be embodied as one unit. However, the present invention is not limited to this, and a plurality of first core units may be implemented in a configuration in which the first core units are arranged side by side in the width direction have. In this case, the second core unit 614 is perpendicularly intersected with each first core unit.

In the modularized wireless power transmission apparatus 600, for convenience of mass production, the first core unit 612 and the plurality of second core units 614 may be fabricated into a single body at the manufacturing stage, Of the plurality of wireless power transmission devices in the lateral direction.

The first winding 622 and the second winding 624 are wound on the first core unit 612 and the second core unit 614, respectively. For example, in the case of the first winding 622, it is wound between both ends of the first core unit 612 and between each second core unit 614, and in the case of the second winding 924, the second core unit 614 As shown in Fig.

8 is a diagram illustrating a third embodiment of a wireless power transfer device 600 according to another embodiment of the present invention.

8, in the case of the third embodiment of the wireless power transfer apparatus 600 according to another embodiment of the present invention, in the first embodiment of the wireless power transfer apparatus 600 shown in FIG. 6, Wing) may be additionally provided. Meanwhile, the wing is preferably a flange, but is not limited thereto.

The wings 630 and 640 may be further formed at one end of at least one of both ends of the first core unit 612 and at both ends of the second core unit 614.

The wings 630 and 640 may be made of any material including ferrite.

The wings 630 and 640 may be embodied in various shapes according to embodiments. For example, the wings 630 and 640 may be formed in a shape that increases in size or decreases in size toward the end, so that the shape viewed from above may have a trapezoidal shape or an inverted trapezoidal shape. Meanwhile, FIG. 8 illustrates a case where the wings 630 and 640 are formed in such a shape that the size thereof decreases as they approach the ends.

The wings 630 and 640 allow the magnetic field to be radiated to a larger area when the wireless power transmitting apparatus 600 is used as a wireless power transmitting apparatus and the wireless power transmitting apparatus 600 is used as a wireless power receiving apparatus A magnetic field of a wider area can be absorbed.

9A is a diagram illustrating a fourth embodiment of a wireless power transfer apparatus 600 according to another embodiment of the present invention. Meanwhile, a fourth embodiment of the wireless power transfer apparatus 600 according to another embodiment of the present invention is shown in the second embodiment of the wireless power transfer apparatus 600 shown in FIG. 7 in which the wings 630 and 640 are additionally provided .

9A, wings 630 and 640 are additionally formed at both ends of the first core unit 612 and at both ends of the plurality of second core units 614 so that the wireless power is more efficiently As shown in FIG. Meanwhile, FIG. 9A illustrates a case where the wings 630 and 640 are formed in such a shape that their size decreases as they approach the ends.

A fourth embodiment of a wireless power transfer apparatus 600 according to another embodiment of the present invention is a wireless power transfer apparatus 600 that is implemented as a wireless power receiving apparatus and is embedded in a mobile device or the like, It is a great advantage in that it can be.

9B and 9C are views illustrating fifth and sixth implementations of a wireless power delivery device 600 in accordance with another embodiment of the present invention.

9B, a fifth embodiment of a wireless power transfer apparatus 600 according to another embodiment of the present invention is basically further provided with wings 630 and 640 as shown in FIG. 9A, (630, 640) increases in size as it goes toward the end.

A fifth embodiment of a wireless power transfer apparatus 600 according to another embodiment of the present invention includes a wireless power transfer apparatus 600 shown in FIG. 9A, when the wireless power transfer apparatus 600 is implemented as a wireless power receiving apparatus, There is an effect that the magnetic field in the space can be absorbed more than the fourth embodiment of FIG.

As shown in FIG. 9C, a sixth embodiment of a wireless power transfer apparatus 600 according to another embodiment of the present invention is basically provided with wings 630 and 640 as shown in FIG. 9A, And the wings of different shapes may be alternately arranged in units. For example, the wing 630a formed in any one of the plurality of second core units provided in the wireless power transmission apparatus 600 is formed in such a shape that its size increases as it goes to the end portion, The wings 630b formed in the second core units adjacent to the two core units may be formed in a shape of decreasing in size toward the ends.

When the wireless power transmitting apparatus 600 is used as a wireless power transmitting apparatus, both ends of the wings 630 and 640 formed in each core unit should not meet or be placed too close to each other. If both ends of the wings 630 and 640 formed in each core unit meet or are disposed too close to each other, a closed loop having a small magnetic resistance is generated between neighboring wings to form a rope, The magnetic field created by the magnetic field does not spread widely in the space, but only inside. Meanwhile, the sixth embodiment of the wireless power transmission apparatus 600 according to another embodiment of the present invention may be realized by arranging wings of different shapes for each core unit so as to be disposed alternately, 5 Reduces magnetic field coupling between wings versus implementation. Thereby, a sixth embodiment of the wireless power transfer apparatus 600 according to another embodiment of the present invention can be used to prevent the formation of the inner loop, while taking some of the advantages of the fifth embodiment of the wireless power transfer apparatus 600 . Meanwhile, in the wireless power transmission apparatus 600 according to the present embodiment, the arrangement interval d ₂ between neighboring second core units is made to have a value twice as large as the width d ₁ of the second core unit The magnetic field coupling between the adjacent wings can be additionally prevented.

10 is a seventh embodiment of a wireless power transfer apparatus 600 according to another embodiment of the present invention.

10, the wireless power transmitting apparatus 600 according to another embodiment of the present invention may be implemented in the form of additionally providing a secondary winding 650. The auxiliary winding 650 may be disposed at a predetermined distance from one side of the wings 630 and 640, for example, in a direction not using the magnetic field, with the wings 630 and 640.

The auxiliary winding 650 plays the same role as the auxiliary windings 300a and 300b shown in Figure 3. To this end, the auxiliary winding 650 flows through the first winding 622 and the second winding 624 of the wireless power transfer device 600 A current having a phase difference of 180 degrees with a current is preferably applied, but it is not limited thereto.

The auxiliary winding 650 may be a single turn or multiple turns of both ends, or resonance may be added by adding a capacitor in series. On the other hand, when the resonance is used, the auxiliary winding 650 is preferably set such that the resonance frequency of the auxiliary winding 650 is lower than the frequency of the current flowing through the first winding 622 and the second winding 924.

The auxiliary winding 1300 may be embodied so as to extend to the first winding 622 or the second winding 624 so that the current flowing through the first winding 622 or the second winding 624 flows as it is The first winding 622 and the second winding 624 are formed so as to have a phase difference of 180 degrees so as to flow the current using the induced electromotive force by the magnetic field generated by the current flowing through the first winding 622 and the second winding 624. [

11A-11C and 12A-12B are schematic diagrams of a wireless power transfer device in accordance with another embodiment of the present invention. Likewise, a wireless power transfer device according to another embodiment of the present invention may be used as a wireless power transmission device or as a wireless power reception device, respectively, according to an embodiment. However, the efficiency of the wireless power transmission apparatus 700 according to another embodiment of the present invention is maximized when the wireless power transmission apparatus 700 is used as a wireless power transmission apparatus. Hereinafter, in FIGS. 11A to 11C and 12A to 12B, 700 will be used as a wireless power transmission device, and the operation of each component will be described.

11A-11C are diagrams illustrating the most basic implementation of a wireless power delivery device 700 in accordance with another embodiment of the present invention.

11A to 11C, a wireless power transfer apparatus 700 according to another embodiment of the present invention includes a winding module including at least two winding units 710, 720, 730, and 740, respectively, .

At this time, among the winding units 710, 720, 730, and 740, the first winding unit 710 and the third winding unit 730 facing each other in diagonal direction are supplied with currents having the same phase, The opposite. The first winding unit 710 and the third winding unit 730 may be connected to one winding unit continuously without interruption according to the embodiment.

The second winding unit 720 and the fourth winding unit 740 facing each other in the mutually diagonally opposite directions among the winding units 710, 720, 730, and 740 are supplied with currents having the same phase, The opposite. The second winding unit 720 and the fourth winding unit 740 can be continuously connected to each other without interruption according to the embodiment to be realized as one winding unit.

Hereinafter, the first winding unit 710 and the third winding unit 730 will be described as D-type winding modules, and the second winding unit 720 and the fourth winding unit 740 will be described as Q-type winding modules.

The first winding unit 710 and the third winding unit 730 receive a current having a predetermined phase difference from each other with the second winding unit 720 and the fourth winding unit 740 to form a rotating magnetic field. It is preferable that the current applied to the first winding unit 710 and the third winding unit 730 and the current applied to the second winding unit 720 and the fourth winding unit 740 have a phase difference of 90 degrees But is not limited thereto.

Each of the winding units 710, 720, 730, and 740 may be implemented in any one of a rectangular shape, a circular shape, and a fan shape as shown in FIGS. 11A to 11C.

12A to 12B, the wireless power transfer apparatus 700 according to another embodiment of the present invention includes the auxiliary core 750 as a component in the wireless power transfer apparatus 700 shown in FIGS. 11A to 11C And can be implemented in a form provided additionally. 12A and 12B, the wireless power transfer apparatus 700 according to another embodiment of the present invention is shown as having only the first winding unit 710 and the third winding unit 730, The secondary winding unit 720 and the fourth winding unit 740 are included in the apparatus 700 in order to more clearly explain the form of the auxiliary core 740 in the apparatus 700 .

The auxiliary core 750 serves to increase the strength of the magnetic field generated in the wireless power transfer apparatus 700. [ At this time, it is preferable that the auxiliary core 750 is positioned between the forming direction of the rotating magnetic field, that is, the central part of each winding unit facing each other in mutually diagonal direction among the winding units 710, 720, 730, 740, It is not.

13 is a diagram illustrating a modular model of a wireless power transfer apparatus according to another embodiment of the present invention. Meanwhile, the modularization model of the wireless power transmission device may be implemented by arranging the winding modules of the wireless power transfer device 700 according to another embodiment of the present invention as a single unit module in order to radiate a magnetic field in a wide space do. Hereinafter, FIG. 13 illustrates a modular model in which a wireless power transmission apparatus according to another embodiment of the present invention is implemented as a wireless power transmission apparatus. However, the present invention is not limited thereto, The same or a similar modular model can be applied even when implemented as an apparatus.

13, a modular model of a wireless power transfer apparatus according to another embodiment of the present invention (hereinafter, referred to as a modular wireless power transfer apparatus) will be described with reference to a plurality of winding modules 810, an inverter 820a, and 820b, and an auxiliary circuit 830.

The winding modules 810 constituting the modular wireless power transmission device 800 are regularly arranged in the horizontal and vertical directions, respectively.

Each winding module 810 basically has a winding module of the wireless power transfer device 700 shown in Figs. 11A to 11C as a basic form. At this time, the first winding unit provided in any one of the plurality of winding modules is connected to the winding module located on the left side of one of the winding modules with respect to the horizontal direction for more efficient connection between the winding modules 810 And can be connected to the provided third winding unit.

The third winding unit included in one of the plurality of winding modules is connected to a winding module positioned on the right side of any one winding module with respect to the horizontal direction for more efficient connection between the winding modules 810 And is connected to the provided first winding unit.

The second winding unit included in one of the plurality of winding modules may be connected to a winding module located on the right side of any one winding module with respect to the longitudinal direction for more efficient connection between the winding modules 810 And is connected to the provided fourth winding unit.

The fourth winding unit included in any one of the plurality of winding modules may be connected to a winding module located on the left side of one of the winding modules with respect to the longitudinal direction for more efficient connection between the winding modules 810 And is connected to the provided second winding unit.

Meanwhile, in the present embodiment, the connection between the winding units provided in the plurality of winding modules is not limited to a specific method, and any method can be adopted as long as a rotating magnetic field can be formed in a wide space. For example, the first winding unit provided in any one of the plurality of winding modules is connected to the first winding unit provided in the winding module located on the left side of one of the winding modules with respect to the transverse direction, The third winding unit provided in any one winding module of the winding modules may be connected to the third winding unit provided in the winding module positioned on the right side of any one of the winding modules with respect to the horizontal direction.

The second winding unit provided in any one of the plurality of winding modules is connected to the second winding unit provided in the winding module positioned on the right side of any one winding module with respect to the longitudinal direction, The fourth winding unit provided in any one winding module of the winding modules may be connected to the fourth winding unit provided in the winding module located on the left side of any one winding module with respect to the longitudinal direction.

In another embodiment, each winding module 810 has a basic form of a winding module of the wireless power transfer apparatus 700 shown in Figs. 11A to 11C, but in order to more efficiently connect each winding module 810, The D-type winding module and the Q-type winding module constituting each winding module 810 can be realized by overlapping two types of winding modules. 14 shows two types of D-type winding modules and D-type winding modules among the Q-type winding modules constituting each winding module 810. [ As shown in FIG. 14, the D-type winding module is implemented as a first type and a second type, and each type includes a first winding unit 710 and a third winding unit 730 as one winding unit, And the directions of the currents are opposite to each other. However, the first type and the second type are implemented in such a manner that the current directions of the currents are opposite to each other. This applies equally to the Q-type winding module.

Similarly, each of the first winding units provided in any one of the plurality of winding modules is connected to a winding located on the left side of one of the winding modules with respect to the lateral direction for more efficient connection between the winding modules 810. [ And may be connected to each of the third winding units provided in the module.

Each of the third winding units of the winding modules of any one of the plurality of winding modules may be connected to a winding located at the right side of one of the winding modules with respect to the horizontal direction for more efficient connection between the winding modules 810. [ And may be connected to each of the first winding units provided in the module.

Each of the second winding units included in one of the plurality of winding modules is connected to a winding located on the right side of one of the winding modules with respect to the longitudinal direction for more efficient connection between the winding modules 810. [ And may be connected to each of the fourth winding units provided in the module.

Each of the fourth winding units of the plurality of winding modules is connected to each of the winding modules located on the left side of one of the winding modules for more efficient connection between the winding modules 810 And the second winding unit of the second winding unit.

The inverters 820a and 820b are provided when the modular wireless power transmitting apparatus 800 is used as a wireless power transmitting apparatus and are connected to a plurality of winding modules 810 included in the modular wireless power transmitting apparatus 800, And provides a current having a predetermined phase difference to the winding module and the Q-type winding module. 13, the modular wireless power transmitting apparatus 800 according to another embodiment of the present invention includes a D-type inverter 820a corresponding to the D-type winding module and a Q-type inverter 820b corresponding to the Q-type winding module However, the present invention is not limited thereto. For example, the modular wireless power transmission apparatus 800 according to another embodiment of the present invention may be implemented in a form having a plurality of inverters according to a connection method between the plurality of winding modules 810.

The auxiliary circuit 830 is a circuit for assisting the connection between the plurality of winding modules 810, and can be implemented as a short circuit or a compensation circuit.

The modular wireless power transmission apparatus 800 according to another embodiment of the present invention can selectively operate the plurality of winding modules 810 by interrupting the electrical connection between the inverters 820a and 820b and the plurality of winding modules 810 And may further include switches 840a and 840b. The modular wireless power transmission apparatus 800 according to another embodiment of the present invention further includes a controller 850a and 850b for controlling the operation of the inverters 820a and 820b and the switches 840a and 840b Can be implemented.

The foregoing description is merely illustrative of the technical idea of the present embodiment, and various modifications and changes may be made to those skilled in the art without departing from the essential characteristics of the embodiments. Therefore, the present embodiments are to be construed as illustrative rather than restrictive, and the scope of the technical idea of the present embodiment is not limited by these embodiments. The scope of protection of the present embodiment should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

100, 600, 700: Wireless power transmission device
110, 512: core 120, 620: winding part
122, 514, 524, 622: first winding 124, 516, 526, 624: second winding
200: metal plate 300a, 300b, 1300: auxiliary winding
400, 750: Auxiliary core
500, 800: Modular Wireless Power Transmission Device
510, 520: Coils 530, 820a, 820b: Inverters
540, 830: Auxiliary circuit 612: First core unit
614: second core unit 630, 640: wing
710: first winding unit 720: second winding unit
730: Third winding unit 740: Fourth winding unit
810: Winding module

Claims (26)

A core having a predetermined width and length; And
And a second winding wound around the core in a width direction of the core, wherein the first winding is wound around the core in the longitudinal direction of the core,
≪ / RTI > The method according to claim 1,
Wherein the first winding and the second winding receive a current having a phase difference of 90 degrees with respect to each other to form a rotating magnetic field. The method according to claim 1,
Wherein the first winding and the second winding are wound on the core in a manner perpendicular to each other. The method according to claim 1,
Further comprising a metal plate positioned at a predetermined distance from the core on one side of the core. The method according to claim 1,
Further comprising at least one auxiliary winding or an auxiliary core located at a predetermined distance from the core on one side of the core. The method according to claim 1,
At least one auxiliary winding disposed at a predetermined distance from the core on one side of the core; And
Further comprising an auxiliary core located at a predetermined distance from the auxiliary winding on one side of the auxiliary winding. A wireless power delivery apparatus comprising:
And a plurality of coils,
Each of the plurality of coils includes:
A core having a predetermined width and length; And
And a second winding wound around the core in a width direction of the core, wherein the first winding is wound around the core in the longitudinal direction of the core,
≪ / RTI > 8. The method of claim 7,
Wherein a first winding of one of the plurality of coils is connected to a first winding of each of the coils located at both sides of the one coil with respect to the transverse direction,
Wherein the second winding of one of the coils is connected to a second winding of each of the coils located at both sides of the one coil with respect to the longitudinal direction, Delivery device. 8. The method of claim 7,
Further comprising a compensation circuit to assist in coupling between the plurality of coils. 8. The method of claim 7,
Further comprising an inverter to provide a current having a phase difference of 90 degrees to the first winding and the second winding to form a rotating magnetic field. The method of claim 10, wherein
A switch for interrupting an electrical connection between the inverter and the plurality of coils; And
Further comprising a control device for controlling operation of the inverter and the switch. At least one first core unit and at least one second core unit, wherein the at least one second core unit has a cross-shaped core portion disposed at a right angle to the first core unit; And
A first core unit wound around the first core unit and a second core wire wound around the second core unit,
≪ / RTI > 13. The method of claim 12,
Wherein the first winding and the second winding receive a current having a phase difference of 90 degrees with respect to each other to form a rotating magnetic field. 13. The method of claim 12,
Wherein at least one end of at least one of both ends of the first core unit and at least one end of the second core unit is formed with a wing. 15. The method of claim 14,
The wing,
And the shape of the wireless power transmission device is such that the size thereof increases or decreases in size toward the end. 16. The method of claim 15,
A plurality of second core units are provided,
The wings formed in any one of the plurality of second core units are formed in such a shape that the size of the wings increases toward the ends, and the wings formed in any one of the second core units Wherein the wing is implemented in a shape that decreases in size as it goes to the end. 15. The method of claim 14,
Further comprising an auxiliary winding located at a predetermined distance from the wing on one side of the wing. Wherein the first winding unit and the third winding unit facing each other in the mutually diagonally opposite direction of the winding unit include a second winding unit and a second winding unit facing each other in the diagonal direction of the winding unit; A winding module for receiving a current having a predetermined phase difference from each other and forming a rotating magnetic field,
≪ / RTI > 19. The method of claim 18,
Wherein the current applied to the first winding unit and the third winding unit and the current applied to the second winding unit and the fourth winding unit have a phase difference of 90 degrees. 19. The method of claim 18,
Further comprising an auxiliary core located between the central portions of the respective winding units facing each other diagonally of the winding units. 19. The method of claim 18,
Wherein the first winding unit and the third winding unit are continuously connected to each other without interruption to form a single winding unit,
Wherein the second winding unit and the fourth winding unit are continuously connected without interruption to form a single winding unit. A wireless power delivery apparatus comprising:
A plurality of winding modules, each of which is arranged in a lateral direction and a longitudinal direction,
Wherein the plurality of winding modules each comprise:
Wherein the first winding unit and the third winding unit facing each other in the mutually diagonal direction of the winding unit include a first winding unit and a second winding unit, And the fourth winding unit are applied with a current having a predetermined phase difference to form a rotating magnetic field. 23. The method of claim 22,
Wherein the first winding unit provided in any one of the plurality of winding modules is connected to a third winding unit provided in a winding module located on the left side of any one of the winding modules with respect to the horizontal direction,
Wherein the third winding unit provided in any one of the winding modules is connected to a first winding unit provided in a winding module located on the right side of any one of the winding modules with reference to the transverse direction, Device. 23. The method of claim 22,
Wherein a second winding unit provided in any one of the plurality of winding modules is connected to a fourth winding unit provided in a winding module located on the right side of any one of the winding modules with respect to the longitudinal direction,
Wherein the fourth winding unit provided in any one of the winding modules is connected to a second winding unit provided in a winding module located on the left side of any one of the winding modules with respect to the longitudinal direction. Device. 23. The method of claim 22,
Further comprising an inverter for providing a current having a different phase difference to the current provided to the second winding unit and the fourth winding unit to the first winding unit and the third winding unit, Device. The method of claim 25, wherein
A switch for interrupting an electrical connection between the inverter and the plurality of winding modules; And
Further comprising a control device for controlling operation of the inverter and the switch.

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